NOTE: The list below is the complete material list of the SAL-20-Mark II. Only the highlighted items are included in its DX version. The rest is to give you an idea on what is needed to complete the antenna. Please, refer to the manual to complement the information.

Now, you have a new interference fighting weapon in your receiving arsenal. The Shared Apex Loop ArrayTM is a revolutionary receiving antenna that will change the way that you listen to the radio! The patented design provides performance in a size and over a range of frequencies that will please both the rag-chewer and DX’er alike.

The antenna is a true-time-delay array with four identical wire loops supported by a single non-conductive mast. Signals from each loop are transferred through a ferrite coupler to a short balanced line that connects to the switch/combiner/amp enclosure mounted at the base of the antenna. Within this enclosure, signals from each loop are routed either directly to a combiner or through a delay line and then to the combiner, where they are amplified by a dual stage balanced broadband amplifier and sent out to the feed line to the controller located in the shack. The controller connects directly to your receiver, and sends power and control signals over the feed line to the antenna.

Effective communication on the LW, MW, and SW bands requires more than just a careful ear. You need the right gear to navigate through the jungle of interference that can be as close as your computer, or as distant as a thunderstorm on the other side of the globe. Interference, though isn't just a challenge for DXers - it's a challenge for net operators, rag chewers and county hunters too, military operations - in other words, it is a challenge to all of us!

We have developed a new type of receiving antenna that delivers exceptional directivity in a small package and is usable over a wide range of frequencies without need for adjustment. This new antenna is called the Shared Apex Loop Array antenna and it opens the door to a new class of compact, high performance, wideband receiving antennas developed for both amateur and professional users.

The antenna operates on the true-time-delay principle rather than the more traditional phased array methods. This method of operation enables outstanding bandwidth. For example, a 22 feet tall, 18 feet radius array, like the SAL-20, can provide outstanding front-to-side and good front-to-back performance for continuous frequency coverage below 500 kHz to 16 MHz with good sensitivity above 1.8 MHz! A 10 foot tall, ten foot radius array provides continuous frequency coverage between 500 kHz to 22 MHz with good sensitivity above 5 MHz.

The patented and additional patent pending designs provides the following benefits:

Compact Size, light weight

Wideband operation without need for adjustment

Ground independent operation

Outstanding front-to-side ratio

Ease of Construction, and simple single feed line control for data and RF